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Discussion Starter · #1 ·
Both of these sensors have integral washers - meaning I can't get them to come off over the threads to replace when reinstalling.

But I'm pretty sure they are "crush washers" and I've always thought that crush washers can't really be reused reliably.

What's a guy to do?
 

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A drop of a "weak" Locktite for secondary sealing or just crank up the tighteneing torque by 10% or so, this is very easy to do, and very hard not to do.
 

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I just did this repair last week on the temp sender. It is possible to get the washer off. There is a small rubber ring inside the washer and you can pry it out with a screwdriver and then thread it out.

I used one of these two washers to replace it, but I can't remember if it was the small or the large.

http://www.eeuroparts.com/Main/PartDetail.aspx?id=4161162

http://www.eeuroparts.com/Main/PartDetail.aspx?id=4443883

As far as the oil pressure sender...if you are going to all the trouble to pull it, I would just replace it. They are very cheap and it's a PITA to get to...so might as well just put a new one in....it's my understanding they are prone to failure anyway.

http://www.eeuroparts.com/Main/PartDetail.aspx?id=55559824
 

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Discussion Starter · #5 ·
A drop of a "weak" Locktite for secondary sealing or just crank up the tighteneing torque by 10% or so, this is very easy to do, and very hard not to do.
The oil pressure sensor re-installed fine, but the coolant temp sensor did not.

I added some thread lock and tightened it down to 18 ft/lbs - any more and I thought it would start to strip threads in the head. It leaked badly.

I managed to get the washer off the sensor by prying it up a bit until it got over the first thread then I just unthreaded it from the sensor - it does not just slip off easily. I think the old washer is aluminium. I had heard that sometimes you can get away with re-using copper crush washers but the aluminium ones are strictly single-use.

I went down to the local auto parts place and picked through a selection of generic copper crush washers (these were labeled "for brake lines") and found one that fit the old sensor.
 
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